$FF48/65352: IRQ Entry
FF48: 48 PHA
FF49: 8A TXA
FF4A: 48 PHA
FF4B: 98 TYA
FF4C: 48 PHA
FF4D: BA TSX
FF4E: BD 04 01 LDA $0104,X ; 6510 Hardware Stack Area
FF51: 29 10 AND #$10
FF53: F0 03 BEQ $FF58
FF55: 6C 16 03 JMP ($0316) ; Vector: BRK Instruction Interrupt Address
Jump from $FF53:
FF58: 6C 14 03 JMP ($0314) ; Vector: Hardware IRQ Interrupt Address
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